Goal: Implement a type that adds a new field to the interface. The type takes the three arguments. The output should be an object with the new field. For example: Source challenge: https://github.com/type-challenges/type-challenges/tree/main/questions/00527-medium-append-to-object Reference explanation: https://github.com/ghaiklor/type-challenges-solutions/blob/main/en/medium-append-to-object.md